.clear:before,.clear:after{
    content:"";
    display:table;
  }
  .clear:after{
    clear:both;
  }
  


/* 背景视频 */
.video-b{
    position: fixed;
    right:0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -9999;
}
/* 中间区域，开始 */
.main {
    margin-top: 30px;
    margin-bottom: 30px;
}
/* 手机视频区域开始 */
.main .ipone{
    float: left;
    margin-left: 350px;
    width: 185px;
    height: 370px;
    position: relative;
}
.main .ipone .img1{
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 2;
}
.main .ipone .img2{
    width: 88%;
    height: 100%;
    position: absolute;
    top: 8px;
    left: 12px;
}
/* 手机视频区域结束 */


/* 文字区域，开始 */
.main .title{
    float: left;
    margin-top: 96px;
    margin-left: 50px;
}
.main .title img{
    width: 100px;
}
.main .title h2{
    margin-top: 10px;
    font-size: 34px;
    font-weight: 500;
}
.main .title ul{
    margin-top: 24px;
}
.main .title ul li{
    float: left;
    margin-right: 10px;
    width: 100px;
    height: 30px;
    background-color: #fff;
    border-radius: 15px;
    line-height: 26px;
    text-align: center;
    font-size: 12px;
    cursor: pointer;
}
.main .title ul li:hover{
    width: 100px;
    height: 30px;
    background-color: #fff;
    border-radius: 15px 15px 0 0;
}
.main .title ul li span{
    margin-right: 6px;
}
.main .title ul li:hover .ios{
    display: block;
}
.title ul li .ios{
    padding-top: 5px;
    width: 100px;
    background-color: #fff;
    position: relative;
    top: 2px;
    display: none;
    border-radius: 0 0 15px 15px;
}
.title ul li .ios img{
    width: 90px;
}
.imgBox {
float: left;
    height: 380px;
    width: 800px;
    margin-left: 50%;
    margin-top: 40px;
    margin-bottom: 20px;
    transform: translate(-50%);
    font-size: 14px;
  }
  .imgBox img {
    width: 200px;
    height: 180px;
    padding: 0 20px;
  }
.text {
    float: left;
    margin-left: 50%;
    transform: translate(-50%);
    font-weight: 500;

  }